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Seismology

Branch of earth sciences concerned with the study of earthquakes and man-induced seismic waves.


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Seismotectonic maps in the vicinity of the lower Wabash Valley,Illinois, Indiana, and Kentucky - Digital Spatial Database:Damaging Earthquakes

This cover consists of location and size information for historicaland recent earthquakes that caused Modified Mercalli Intensity(MMI) VI (6) or higher in the map area. There were 26 earthquakesthat caused that level of damage. The most reknown are thefou

Seismotectonic maps in the vicinity of the lower Wabash Valley,Illinois, Indiana, and Kentucky - Digital Spatial Database:Instrumental earthquake locations

This cover contains the catalog of earthquake locations, within theproject boundary, recorded by the Saint Louis University and MemphisState University seismic networks from July 1974 through December 1995.

Seismotectonic maps in the vicinity of the lower Wabash Valley,Illinois, Indiana, and Kentucky - Digital Spatial Database:Modified Mercalli Intensity contours for the earthquakes fromDecember 16, 1811 at 815 GMT through June 10, 1987 at 2348 GMT

Isoseismals of historic Central U.S. earthquakes are containedin 26 separate coverages. Margaret Hopper provided these isoseismals after reexamining theintensity data and re-calculating the isoseismal contours. Shegenerated isoseismal contours for each e

Seismic-Hazard Maps for Alaska and the Aleutian Islands: 1HZ050

Probabilistic seismic hazard maps were prepared for Alaska portrayingpeak horizontal ground acceleration and horizontal spectral responseacceleration for 0.2, 0.3, and 1.0 second periods with probabilitiesof exceedance of 10% in 50 years and 2% in 50 year

Seismic-Hazard Maps for Alaska and the Aleutian Islands: 1HZ250

Probabilistic seismic hazard maps were prepared for Alaska portrayingpeak horizontal ground acceleration and horizontal spectral responseacceleration for 0.2, 0.3, and 1.0 second periods with probabilitiesof exceedance of 10% in 50 years and 2% in 50 year

Seismic-Hazard Maps for Alaska and the Aleutian Islands: 3HZ050

Probabilistic seismic hazard maps were prepared for Alaska portrayingpeak horizontal ground acceleration and horizontal spectral responseacceleration for 0.2, 0.3, and 1.0 second periods with probabilitiesof exceedance of 10% in 50 years and 2% in 50 year

Seismic-Hazard Maps for Alaska and the Aleutian Islands: 3HZ250

Probabilistic seismic hazard maps were prepared for Alaska portrayingpeak horizontal ground acceleration and horizontal spectral responseacceleration for 0.2, 0.3, and 1.0 second periods with probabilitiesof exceedance of 10% in 50 years and 2% in 50 year

Seismic-Hazard Maps for Alaska and the Aleutian Islands: 5HZ050

Probabilistic seismic hazard maps were prepared for Alaska portrayingpeak horizontal ground acceleration and horizontal spectral responseacceleration for 0.2, 0.3, and 1.0 second periods with probabilitiesof exceedance of 10% in 50 years and 2% in 50 year

Seismic-Hazard Maps for Alaska and the Aleutian Islands: 5HZ250

Probabilistic seismic hazard maps were prepared for Alaska portrayingpeak horizontal ground acceleration and horizontal spectral responseacceleration for 0.2, 0.3, and 1.0 second periods with probabilitiesof exceedance of 10% in 50 years and 2% in 50 year

Seismic-Hazard Maps for Alaska and the Aleutian Islands: PGA050

Probabilistic seismic hazard maps were prepared for Alaska portrayingpeak horizontal ground acceleration and horizontal spectral responseacceleration for 0.2, 0.3, and 1.0 second periods with probabilitiesof exceedance of 10% in 50 years and 2% in 50 year

Seismic-Hazard Maps for Alaska and the Aleutian Islands: PGA250

Probabilistic seismic hazard maps were prepared for Alaska portrayingpeak horizontal ground acceleration and horizontal spectral responseacceleration for 0.2, 0.3, and 1.0 second periods with probabilitiesof exceedance of 10% in 50 years and 2% in 50 year

Elements of infrastructure and seismic hazard in the central United States - Database

This digital map database consists of the ESRI ARC/INFO Version7.0.2 coverages used to generate the plates in Professional Paper1538-M (1994). Base-data is from 1:2,000,000-scale Digital LineGraph (DLG) data (roads, railroads, streams, water bodies, and

Seismotectonic maps in the vicintiy of New Madrid, Missouri database

This digital map database consists of the ESRI ARC/INFO Version 7.0.3coverages used to generate the maps in Map Series MF-2264 A to E (Rheaand Wheeler, 1994a,b, Rhea and others, 1994, Wheeler and Rhea, 1994,Wheeler and others, 1994) and I-2521 (Rhea and W

Seismotectonic maps in the vicinity of the lower Wabash Valley,Illinois, Indiana, and Kentucky - Digital Spatial Database:COCORP seismic reflection surveys

This cover contains locations of two COCORP lines that cross thestudy area.

Seismotectonic maps in the vicinity of the lower Wabash Valley,Illinois, Indiana, and Kentucky - Digital Spatial Database:Seismograph Network station locations

This cover contains station locations of the New Madrid SeismicNetwork within the study boundary. The network is a cooperativeproject of Saint Louis University and Memphis State University.Operation of the network has been continuous since June 1975, buto

Seismotectonic maps in the vicinity of the lower Wabash Valley,Illinois, Indiana, and Kentucky - Digital Spatial Database:Reported Modified Mercalli Intensity values

This cover contains locations with intensity values associatedwith felt reports from damaging earthquakes in the lower WabashValley occurring from 1811 through 1987. Margaret Hopper collatedthese data from historical data gathered from previousresearcher

Seismotectonic maps in the vicinity of the lower Wabash Valley,Illinois, Indiana, and Kentucky - Digital Spatial Database:Seismic reflection lines

This cover includes seismic reflection lines that have geophysicalcross-sectional interpretations constraining subsurface structuresthat may penetrate to hypocentral depths. Lines were gathered fromtheses, dissertations, and publications.

Seismotectonic maps in the vicinity of the lower Wabash Valley,Illinois, Indiana, and Kentucky - Digital Spatial Database:Seismic refraction lines

This cover includes seismic refraction lines that have geophysicalcross sectional interpretations constraining subsurface structuresthat may penetrate to hypocentral depths. Lines were gathered fromtheses, dissertations, and publications.

Seismotectonic maps in the vicinity of the lower Wabash Valley,Illinois, Indiana, and Kentucky - Digital Spatial Database:Locations of stress orientations

NOTE: Location of one point, near -88.65, 38.95, was incorrectwhen Sheet A was published. The location is .5 degree south, andis corrected in this dataset. This cover contains locations of places where greatest horizontalcompressive stress (S(Hmax)) orie

Seismotectonic maps in the vicinity of the lower Wabash Valley,Illinois, Indiana, and Kentucky - Digital Spatial Database:Strong Motion Program station locations

This cover contains locations of strong motion accelerograph instrumentslocated in the lower Wabash Valley. The instruments are operated byLamont-Doherty Geological Observatory, the University of Kentucky, andthe U.S. Army Corps of Engineers Strong Motion

Seismotectonic maps in the vicinity of the lower Wabash Valley,Illinois, Indiana, and Kentucky - Digital Spatial Database:Temporary seismic network station locations

This cover contains the locations of stations deployed in the temporarynetwork by M.W. Hamburger, G.L.Povlis, and others atIndiana University from October 1995 through June 1996.20 three-component digital instruments were deployednear the Wabash River. 10

Seismotectonic maps in the vicinity of the lower Wabash Valley,Illinois, Indiana, and Kentucky - Digital Spatial Database:Paleoliquefaction locations between 1990 and 1994 in Illinois

The northern part of the map area and large adjacent regions havebeen severely shaken by one or more moderate to large prehistoricearthquakes. The evidence of these takes the form ofpaleoliquefaction features, including shaking-induced sandblows anddikes

Seismotectonic maps in the vicinity of the lower Wabash Valley,Illinois, Indiana, and Kentucky - Digital Spatial Database:Paleoliquefaction surveys between 1990 and 1994 in Illinois

Over several summer field seasons from 1990 through 1994,several workers searched ditches and river banks for evidence ofliquefaction. They found numerous banks with shaking-induced,pre-historic, earthquake induced sandblows and thedikes that fed them. Th

Seismotectonic maps in the vicinity of the lower Wabash Valley,Illinois, Indiana, and Kentucky - Digital Spatial Database:Paleoliquefaction locations observed in 1995 in Illinois

The northern part of the map area and large adjacent regions havebeen severely shaken by one or more moderate to large prehistoricearthquakes. The evidence of these takes the form ofpaleoliquefaction features, including shaking-induced sandblows anddikes

Seismotectonic maps in the vicinity of the lower Wabash Valley,Illinois, Indiana, and Kentucky - Digital Spatial Database:Paleoliquefaction surveys in 1995 in Illinois

Over several summer field seasons from 1990 through 1994,several workers searched ditches and river banks for evidenceof prehistoric earthquake liquefaction.They found numerous banks with shaking-induced sandblows and thedikes that fed them. "liq94surv" s

Seismotectonic maps in the vicinity of the lower Wabash Valley,Illinois, Indiana, and Kentucky - Digital Spatial Database:Paleoliquefaction observations between 1990 and 1994 in Indiana

The northern part of the map area and large adjacent regions havebeen severely shaken by one or more moderate to large prehistoricearthquakes. The evidence of these takes the form of paleoliquefactionfeatures, including shaking-induced sandblows and dikes

Seismotectonic maps in the vicinity of the lower Wabash Valley,Illinois, Indiana, and Kentucky - Digital Spatial Database:Paleoliquefaction surveys between 1990 and 1994 in Indiana

The northern part of the map area and large adjacent regions havebeen severely shaken by one or more moderate to large prehistoricearthquakes. The evidence of these takes the form of paleoliquefactionfeatures, including shaking-induced sandblows and dikes

Seismotectonic maps in the vicinity of the lower Wabash Valley,Illinois, Indiana, and Kentucky - Digital Spatial Database:Paleoliquefaction surveys between 1990 and 1994

Note: this cover is a combination of liq94surv and liqmunsurv. The northern part of the map area and large adjacent regions havebeen severely shaken by one or more moderate to large prehistoricearthquakes. The evidence of these takes the form of paleoliqu